scholarly journals Charge Versus Energy Transfer in Atomically Thin Graphene-Transition Metal Dichalcogenide van der Waals Heterostructures

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Guillaume Froehlicher ◽  
Etienne Lorchat ◽  
Stéphane Berciaud
Keyword(s):  
Energy Transfer ◽  
Transition Metal ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenide ◽  
Van Der Waals Heterostructures

Tunable coupling of terahertz Dirac plasmons and phonons in transition metal dichalcogenide-based van der Waals heterostructures

2D Materials ◽  
2021 ◽  
Author(s):  
Icaro Rodrigues Lavor ◽  
Andrey Chaves ◽  
Francois M Peeters ◽  
Ben Van Duppen
Keyword(s):  
Transition Metal ◽  
Fermi Energy ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Phonon Coupling ◽  
Van Der Waals Heterostructures ◽  
Composition And Structure ◽  
Metal Dichalcogenides ◽  
Tunable Coupling

Abstract Dirac plasmons in graphene hybridize with phonons of transition metal dichalcogenides (TMDs) when the materials are combined in so-called van der Waals heterostructures (vdWh), thus forming surface plasmon-phonon polaritons (SPPPs). The extend to which these modes are coupled depends on the TMD composition and structure, but also on the plasmons' properties. By performing realistic simulations that account for the contribution of each layer of the vdWh separately, we calculate how the strength of plasmon-phonon coupling depends on the number and composition of TMD layers, on the graphene Fermi energy and the specific phonon mode. From this, we present a semiclassical theory that is capable of capturing all relevant characteristics of the SPPPs. We find that it is possible to realize both strong and ultra-strong coupling regimes by tuning graphene's Fermi energy and changing TMD layer number.

scholarly journals Momentum-space indirect interlayer excitons in transition-metal dichalcogenide van der Waals heterostructures

2018 ◽  
Vol 14 (8) ◽  
pp. 801-805 ◽  
Author(s):  
Jens Kunstmann ◽  
Fabian Mooshammer ◽  
Philipp Nagler ◽  
Andrey Chaves ◽  
Frederick Stein ◽  
...  
Keyword(s):  
Transition Metal ◽  
Momentum Space ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenide ◽  
Van Der Waals Heterostructures

Graphene-Supported 2D transition metal dichalcogenide van der waals heterostructures

2020 ◽  
Vol 19 ◽  
pp. 100600 ◽  
Author(s):  
Jalal Azadmanjiri ◽  
Vijay K. Srivastava ◽  
Parshant Kumar ◽  
Zdeněk Sofer ◽  
Jiakang Min ◽  
...  
Keyword(s):  
Transition Metal ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenide ◽  
Van Der Waals Heterostructures

scholarly journals Room-Temperature Valley Polarization and Coherence in Transition Metal Dichalcogenide–Graphene van der Waals Heterostructures

ACS Photonics ◽  
2018 ◽  
Vol 5 (12) ◽  
pp. 5047-5054 ◽  
Author(s):  
Etienne Lorchat ◽  
Stefano Azzini ◽  
Thibault Chervy ◽  
Takashi Taniguchi ◽  
Kenji Watanabe ◽  
...  
Keyword(s):  
Transition Metal ◽  
Room Temperature ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenide ◽  
Van Der Waals Heterostructures ◽  
Valley Polarization
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